AMC MCQ Neurology and Mental Health 3

Question 1

A 22-year-old presents with foot drop and weakness of ankle dorsiflexion after sitting cross-legged for a prolonged period. Which nerve is most likely affected?

Accepted Answer

Common peroneal (fibular) nerve

Answer

Compression of the common peroneal nerve at the fibular head causes foot drop and impaired dorsiflexion.

Question 2

A 19-year-old student has had six months of excessive worry about many areas of life, restlessness, muscle tension and difficulty concentrating most days. What is the most likely diagnosis?

Accepted Answer

Generalised anxiety disorder

Answer

Persistent, excessive, hard-to-control worry across multiple domains for at least six months defines generalised anxiety disorder.

Question 3

A patient develops a sudden severe headache, neck stiffness, photophobia and a third nerve palsy. What is the most likely underlying cause?

Accepted Answer

Ruptured posterior communicating artery aneurysm

Answer

A painful third nerve palsy with meningism strongly suggests a posterior communicating artery aneurysm causing subarachnoid haemorrhage.

Question 4

A 60-year-old with long-standing alcohol use presents confused, with ophthalmoplegia and ataxia. What is the most appropriate immediate treatment?

Accepted Answer

Intravenous thiamine before any glucose

Answer

Wernicke's encephalopathy requires parenteral thiamine before glucose to avoid precipitating irreversible damage.

Question 5

A 35-year-old man believes he is being followed by government agents, hears voices commenting on his actions, and has shown social withdrawal for the past eight months. What is the most likely diagnosis?

Accepted Answer

Schizophrenia

Answer

Persistent delusions, third-person auditory hallucinations and functional decline beyond a month indicate schizophrenia.

AMC MCQ Practice Test

AMC MCQ Practice Test

AMC MCQ Neurology and Mental Health 3